Concrete window sash



Sept. 29, 1931. F. MGM, SAWYER CONCRETE WINDOW SASH Filed June 11, 1930 Patented Sept, 29, 1931 UNITED STATES FRANK MGMUBRAY SAWYER, or RICHMOND, VIRGINIA CONCRETE WINDOW sAsH Application filed June 11, 1930. Serial No. 460,444

This invention relates to improvements in window sash, and has for its object to provide a concrete window sash provided with vertical and horizontal mullions to permit the use of a plurality of panes of glass, and reinforce the bottom rail in a manner to permit the use of roller or ball bearings so that the sash can he slid to open or closed position. In other words, the particular ob- 1o ject is to provide a concrete slidable sash which will maintain its vertical lines at all times and utilize the bottom rail reinforcement for a housing for ball bearings.

These and other objects are attained by the -6 means illustrated in the accompanying draw-' ings, in which:

Fig. 1 is a View in elevation of part of a double sash;

Fig. 2 is a vertical sectional View taken 20 centrally through one of the sashes;

Fig. 3 is a horizontal sectional view taken on the line 3-3 of Fig. 1;

Fig. 4 is a vertical sectional view taken through a portion of the bottom rail;

Fig. 5 is a cross sectional view taken on the line 55 of Fig. 4; and,

Fig. 6 is a detail perspective view of a portion of the bottom rail reinforcement showing the manner of constructing the same to 30 form the ball bearing housings.

Similar reference numerals in all of the views of the drawings designate like parts.

In Fig. 1 of the drawings is shown a window having two sashes 10 which are mounted in a manner to slide in opposite directions to open and when closed are in abutting relation, preferably with the abutting edges in overlapped position, as shown at 11, to make an air-tight joint, it being understood that any suitable packing material can be used at this joint, if desired. In a closed position, the sashes can be locked to each other with suitable fastening means, such as, the means shown at 12.

Each sash 10 is cast of concrete in suitable molds and is formed with top and bottom rails 13 and 14, respectively, back rail 15, and a meeting rail 16, these rails all being connected in each sash with mullions 17, as in the manner of constructing wooden sash, ex-

strip 21.

vision being provided in the mullions and rails to panes. V V

At the top side of the window frame in 'alinement with the joint between the meeting rails 16 is a buifer stop 18, each sash at one corner being cast with a shoulder 19 to abut the buffer stop. The window frame, also at the top side, is provided with the guide rails 20',20,spaced apart to form a guide way for the toprail'of the sashes, said guide ,7 way being sufiiciently deep to provide a space above the top rails to hold a flexible packing The sashfare also additionally limited in their inward movement by beveled shoulders 22 of the vertical stops'23, removably placed on each side of the sash, the vertical back rails ofthe sash being formed with inclined abutting surfaces 24 which contact with the shoulders 22 when the sashare in their closed position. Q

Bottom rail 14 of each sash is reinforced its entire width by an arch-shaped metallic member 25 having its mouth contracted from the normal width of the arched portion and also having its free edges bent backward acutely to the sides to form anchoring means in the concrete. These arched-shaped members are placed in the mold before the concrete'is poured, and, consequently, it is firmly embedded. The arch portions together with a portion of the contracted sides form a bearing for the balls 26, and the balls are preferably arranged in groups, (two groups being shown), a group adjacent each vertical edge of each sash. The balls are maintained in grouped relation by division plates 27, two to each group of balls, the division plates supported or located in transverse cuts or slots "28 formed in the arch portion of the member 25. These division plates project'above the crown of the member 25, so that when they are cast in the concrete of the sash they prevent any longitudinal movementin the sash rail.

The groups of balls are supported upon suitable tracks 29 which have their bases empermit seating of the usual glass bedded in the sills 30, and are continued beyond the sash a distance equal at least to the width of each sash, the walls to the outside of the sash being arranged to form hollow spaces 5 in which the sash travel when opened.

lVith this construction the sash are easily assembled in place.

Having thus fully described the invention what is claimed is:

1. A window sash formed of concrete and provided with vertical and horizontal rails and mullions connecting said rails, the rails and mullions being reinforced by longitudinally extending metallic elements, one of the metallic reinforcing elements in the bottom rail being arch-shaped in cross section and extending the full width of the sash to provide a raceway, and a series of ball bearings engaging the raceway,

2. A window sash formed of concrete and provided with vertical and horizontal rails and mullions connecting said rails, the rails and mullions being reinforced by longitudinally extending metallic elements, one of the metallic reinforcing elements in the bottom rail being arch-shaped in cross section and extending the full Width of the sash to provide a raceway, and a series of ball bearings engaging the raceway, said ball bearings being arranged in groups and maintained in grouped relation by transverse division plates.

3. A window sash formed of concrete and provided with vertical and horizontal rails and mullions connecting said rails, the rails and mullions being reinforced by longitudinally extending metallic elements, one of the metallic reinforcing elements in the bottom rail being arch-shaped in cross section and extending the full width of the sash to provide a raceway, and a series of ball bearings engaging the raceway, said ball bearings being arranged in groups and maintained in grouped relation by transverse V division plates, the transverse plates extending about the crown of the arch-shaped reinforcement and embedded in the concrete of the sash to prevent longitudinal displacement of the reinforcement.

59 l. A window sash formed of concrete and provided with vertical and horizontal rails and mullions connecting said rails, the rails and mullions being reinforced bylongitudinally extending metallic elements, one of the metallic reinforcing elements in the bottom rail being arch-shaped in cross section and extending the full width of the sash to provide a raceway, and also being provided with longitudinal flanges arranged acutely with re- 50 spect to the body portion of the arched-shaped member.

In testimony whereof, I hereunto affix my signature.

FRANK MQMURRAY SAWYER. 

